What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 3271-4: LMW Heparin Chromogenic method Qn (PPP)

Name: LOINC Code 3271-4: LMW Heparin Chromogenic method Qn (PPP)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

3271-4 is a LOINC code used to identify LMW Heparin Chromogenic method Qn (PPP) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Heparin.low molecular weight. It is commonly used with the system or sample type PPP.

Reviewed by HealthAssure Clinical TeamUpdated 25 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Heparin.low molecular weight. It is commonly used with the system or sample type PPP.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Both
Method: Chromo

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

LMW Heparin [Units/volume] in Platelet poor plasma by Chromogenic method
Heparin.low molecular weight
Anti-Xa; Arbitrary concentration; Chromogenic assay; Clexane; COAGULATION; Enoxaparin; ENZY; Enzymatic assay; Hematology; Heme; Hep; Hepar; Heparn; LMWH; Lovenox; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Wt

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Related SNOMED CT concepts

705114005SNOMED CT mapping for LMW Heparin Chromogenic method Qn (PPP) (3271-4)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

LMW Heparin Chromogenic method Qn (PPP)LMW Heparin [Units/volume] in Platelet poor plasma by Chromogenic methodLMWH PPP Chro-aCncHeparin.low molecular weightCOAGLMW heparin, BloodACnc

Frequently asked questions

Code details

Code3271-4

SystemLOINC

Display nameLMW Heparin Chromogenic method Qn (PPP)

DescriptionHeparin.low molecular weight

Short nameLMWH PPP Chro-aCnc

ComponentHeparin.low molecular weight

PropertyACnc

TimingPt

System (specimen)PPP

ScaleQn

MethodChromo

ClassCOAG

Example unitsarb U/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.73

Consumer names

LMW heparin, Blood

Part names

Heparin.low molecular weightACncPtPPPQnChromoLMW HeparinArbitrary ConcentrationPoint in time (spot)Platelet poor plasmaChromogenic (Enzyme)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.